<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script type="text/javascript">
			/*
			 * =
			 * 	可以将符号右侧的值赋值给符号左侧的变量
			 * += 
			 * 	a += 5 等价于 a = a + 5
			 * -=
			 * 	a -= 5 等价于 a = a - 5
			 * *=
			 * 	a *= 5 等价于 a = a * 5
			 * /=
			 * 	a /= 5 等价于 a = a / 5
			 * %=
			 * 	a %= 5 等价于 a = a % 5
			 * 	
			 */
			var a = 10;
			console.log("a = "+a);
			
			a = a + 5;
			console.log("a = "+a);
			a = 10;
			a += 5;
			console.log("a = "+a);
			
			a = 10;
			a -= 5;
			console.log("a = "+a);
			
			a = 10;
			a *= 5;
			console.log("a = "+a);
			
			a = 10;
			a = a%3;
			console.log("a = "+a);
			
			a = 10;
			a %= 3;
			console.log("a = "+a);
			
			
			
		</script>
	</head>
	<body>
	</body>
</html>
